Section Vi - Gas Piping; Gas Supply Piping Connection; Pipe Sizing -Natural Gas; Natural Gas Supply Pressure Requirements - Prestige Solo 175 Installation And Maintenance Manual

Gas Piping

SECTION VI - Gas Piping

Gas Supply Piping Connection

NOTICE
The gas supply piping must be installed
in accordance to all applicable local,
state and national codes and utility
requirements.
1. Install a 3/4" NPT pipe union at the factory
supplied gas nipple, for ease of service.
2. Install a manual shutoff valve in the gas
supply piping as shown in Fig. 17. For
installations in Canada the installer must
tag and identify the main shutoff valve.
3. Install a sediment trap (drip leg) on the gas
supply line prior to connecting to the
PRESTIGE gas train as shown in Fig. 17.
4. Support the gas piping using hangers. Do
not support the piping by the unit or its
components.
5. Purge all air from the gas supply piping.
6. Before placing the PRESTIGE into opera-
tion, check and test all connections for
leaks.
- Close the manual shutoff valve during
any pressure test with less than 13"w.c..
- Disconnect the PRESTIGE and its gas
valve from the gas supply piping during
any pressure test greater than 13"w.c..
WARNING
Do not check for gas leaks with an open
flame. Use a gas detection device or bub-
ble test. Failure to check for gas leaks
can cause severe personal injury, death
or substantial property damage.
7. Use pipe dope compatible with natural and
propane gases. Apply sparingly only to the
male threads of pipe joints so that pipe
dope does not block gas flow.
WARNING
Failure to apply pipe dope as detailed
above can result in severe personal
injury, death or substantial property
damage.
WARNING
Use a two-wrench method of tightening
gas piping near the unit and its gas pip-
ing connection. Use one wrench to pre-
vent the boiler gas line connection from
turning and the second to tighten adja-
cent piping. Failure to support the boil-
er gas piping connection could damage
the gas line components.
Gas Flow
External Manual
Gas Shut Off
Valve (Must Be
Within 6' of the
Boiler)
Tee Fitting
Sediment
Trap Min.
Length of 3"
Fig. 17: Recommended Gas Supply Piping
28
Union Fitting
Cap